What's happening is that the US is selling Russian "aggression" while setting it up and giving Russia the Hobson's choice of either letting NATO surround it or being drawn into a situation in Easter Ukraine where the US can claim that Russia is the aggressor.
What could go wrong with a strategy like that? Looks foolproof to the fools who put it together.
This is a piece of a plan that has long been in place and it not limited to Russia. To ensure global hegemony lasts indefinitely without any serious challenges, the US needs to install compliant neoliberal puppets in Russia and China and will stop at nothing to do so, even risking nuclear war.
What's the rush? The US military realizes that they have a relatively short window of opportunity before Russia and China become so strong as to close the window. Since Russia and China have realized the trap they are arming up quickly.
Of course the US military knows it cannot win a land war in Eurasia against either Russia or China and certainly not against both, but it can create enough chaos to keep the US dominant.
The gamble is that Russia will not respond with a nuclear attack in spite of Putin's warning that everything is on the table and that this time the US will not be left untouched by war.
The other gamble the US is taking is that is will unravel NATO as Europeans decide that yet another war in Europe is not a good idea.
On the other hand, with the EU coming apart and the EZ breaking down economically, the leadership may be thinking that a war is needed to keep it together.
The United States and NATO Are Preparing for a Major War With Russia
Michael T. Klare